Paratropididae

Family: Paratropididae

Common Name

There is no widely accepted common name for this family. They are sometimes referred to as "bald-legged spiders."

Overview

Paratropididae is a family of mygalomorph spiders that are relatively obscure and not well-studied. They are distributed in Central and South America, inhabiting tropical rainforests and montane regions.

Taxonomy

Key Characteristics

  • Chelicerae : Long and powerful, adapted to hunting and capturing prey.
  • Legs : Possess a unique feature where the femora of the legs are often bald, which gives rise to their nickname.
  • Body : Covered with setae (bristles) that can detach and become embedded in potential threats as a defense mechanism.
  • Eyes : Typically eight, arranged in two rows.

Life Cycle

  • Eggs : Laid in an egg sac and protected until they hatch.
  • Spiderlings : Undergo several molts before reaching maturity.
  • Adults : Have a lifecycle that lasts several years, progressing from juvenile to sexually mature individuals.

Behavior and Ecology

  • Habitat : Prefer humid, forested environments.
  • Burrowing : Known for their burrowing behavior, which they use for hiding and ambushing prey.
  • Diet : Primarily consists of insects and other small invertebrates.
  • Predators : Birds, reptiles, and some mammals.

Notable Species

  • Paratropis : One of the more well-known genera within the family.
  • Stormtropis :
    • Stormtropis colima : A species described recently, showcasing the ongoing discovery within this less-studied family.

Conservation

While specific conservation statuses of Paratropididae species are not well-documented, habitat destruction in tropical regions poses a potential threat to their populations.

Significance to Humans

Paratropididae spiders are of interest mainly to researchers due to their unique characteristics and behaviors. They have no known significant impact on human activities.

Fun Facts

  • Paratropididae spiders can detach their leg bristles as a defense mechanism.
  • Despite their formidable appearance, these spiders are generally harmless to humans.
  • The name "Paratropididae" is derived from the type genus Paratropis , which hints at their unique morphological traits.
  • They exhibit cryptic coloration, blending well with their forest floor habitats.